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Line/load reactors help to keep equipment running longer by absorbing many of the power disturbances which otherwise damage motors and drives. Reactors can be used on the input or output of an AC drive. When used on the input, the reactor protects the drive from voltage transients on the power line. It also protects sensitive equipment from noise generated by the drive. Since the Phoenix drives themselves have a built in three percent (3%) bus reactor, an external line reactor is typically not needed. On the output of a drive, the reactor reduces voltage transients seen by the motor.

US Drives' AC line/load reactors are harmonic compensated to assure optimum performance in the presents of harmonics. Linearity of an AC line/load reactor is very important. Even at one hundred fifty percent (150%) of their current rating, these reactors still have one hundred percent (100%) of their nominal inductance. This assures maximum filtering of distortion even in the presence of severe harmonics and best absorption of surges.